Comparison

 

Type Total Dissolved Solids (TDS)
Parts Per Million

Remarks

1 Refresh Distilled Water 0 (Less than 1)
2 Other Distilled 1 - 5
3 Deionised or Demineralised Water (often wrongly referred to as distilled) 2 - 8 Without sterilisation cannot be used for drinking
4 Reverse Osmosis 8 - 20
5 Rain Water 15 - 50
6 Spring Water 70 - 200
7 Filtered Water 60 - 400 Filtration improves the taste but does not remove mineral salts in water
8 Tap Water 80 - 600+
9 Bore Water 1000+